Sign up to receive free email alerts when patent applications with chosen keywords are publishedSIGN UP

Abstract:

A spiral fin heat exchanger with a new fixed manner includes a bended fin
tube comprising a inner tube on which fins are provided, and several
fixing members are provided on the fin tube, the fixing member includes
an upper bracket and a lower bracket, and the upper bracket comprises a
cover plate and a vertical plate, the upper bracket is fixedly connected
with the lower bracket, and the fins on the fin tube are caught between
the cover plate and the lower bracket, a positioning groove is provided
on the vertical plate, and the inner tube of the fin tube is caught in
the positioning groove. The spiral fin heat exchanger can fix the fins
and the inner tube of the fin tube simultaneously through the upper and
lower brackets of the fixing member, thereby achieving the effect of dual
fixation, such that the fin tube can be fixed more firmly and is not easy
to loosen, which can in turn reduce the noise of spiral fin heat
exchanger effectively.

Claims:

1. A spiral fin heat exchanger with a new fixed manner including a bended
fin tube comprising a inner tube on which fins are provided, it is
characterized in that: several fixing members are provided on the fin
tube, the fixing member includes an upper bracket and a lower bracket,
the upper bracket comprises a cover plate and a vertical plate, the upper
bracket is fixedly connected with the lower bracket, and the fins on the
fin tube are caught between the cover plate and the lower bracket, a
positioning groove is provided on the vertical plate, and the inner tube
of the fin tube is caught in the positioning groove.

2. The spiral fin heat exchanger with a new fixed manner according to
claim 1, characterized in that: the fin tube is repeatedly bended, and
lengths of the two adjacent bends of the fin tube are different.

3. The spiral fin heat exchanger with a new fixed manner according to
claim 1, characterized in that: the upper bracket is fixedly connected
with the lower bracket through a side bracket.

Description:

CROSS-REFERENCE TO RELATED APPLICATION(S)

[0001] This application claims priority from Chinese Patent Application
No. 201120486867.4, filed on Nov. 30, 2011 in the Chinese Patent Office,
the disclosure of which is incorporated herein by reference.

TECHNICAL FIELD

[0002] The present utility model relates to a heat exchanger, especially
to a spiral fin heat exchanger with a new fixed manner.

BACKGROUND ART

[0003] Heat exchangers in the refrigerating apparatuses such as
refrigerator, icebox, etc are mostly spiral fin heat exchangers, that is,
the heat exchange is performed using fin tubes. The fin tube mainly
consists of an inner tube and fins on a surface of the inner tube. On the
current market, such a radiator with the fin tube structure is generally
fixed by winding metal straps. The metal straps can be wound or welded on
the fin tube in forms of wrinkle or sheet flanging, such that the
radiation area and the radiation effect of the heat exchanger can be
improved, thereby saving energy consumption.

[0004] However, the metal straps of such a fixed structure of the heat
exchanger are generally wound on the fins of the heat exchanger, and
usually, only can be fixed around by fasteners, thus there is very little
contact between the fasteners and the fin tube, causing unstability of
the fixation. Since the heat exchanger may generate vibration under the
influence of the compressor in actual use, the fin tube is easy to
loosen, such that the noise is easily generated, thereby having an
adverse affect on the quality of the whole refrigerating apparatus.

[0005] Meanwhile, in order to meet the requirements in terms of the heat
exchange area and the energy consumption of the heat exchanger, the fin
tube is generally manufactured by means of repeated bending. Due to
product particularity, it is very easy to cause problems of rewinding,
etc in a bended inner ring, which may also result in increase of the wind
resistance and the noise.

DISCLOSURE OF UTILITY MODEL

[0006] In view of the above drawbacks in the prior art, the present
utility model aims to provide a heat exchanger in which a fin tube is
fixed more effectively.

[0007] In order to resolve the above technical problems, the present
utility model adopts the following technical solution:

[0008] A spiral fin heat exchanger with a new fixed manner includes a
bended fin tube comprising an inner tube on which fins are provided, and
several fixing members are provided on the fin tube, the fixing member
includes an upper bracket and a lower bracket, the upper bracket
comprises a cover plate and a vertical plate, the upper bracket is
fixedly connected with the lower bracket, and the fins on the fin tube
are caught between the cover plate and the lower bracket, a positioning
groove is provided on the vertical plate, and the inner tube of the fin
tube is caught in the positioning groove.

[0009] Preferably, the fin tube is repeatedly bended, lengths of the two
adjacent bends of the fin tube are different.

[0010] Preferably, the upper bracket is fixedly connected with the lower
bracket through a side bracket.

[0011] The above technical solution has the following beneficial effects:
the spiral fin heat exchanger can fix the fins and the inner tube of the
fin tube simultaneously through the upper and lower brackets of the
fixing member, thereby achieving the effect of dual fixation, such that
the fin tube can be fixed more firmly and is not easy to loosen, which
can in turn reduce the noise of the spiral fin heat exchanger
effectively.

[0012] The above description is only a summary of the technical solution
of the present utility model; in order to understand the technical means
of the present utility model more clearly and implement the technical
solution according to the disclosure of the specification, hereinafter,
the present utility model is described in detail on the basis of the
better exemplary embodiment thereof in conjunction with the accompanying
drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. 1 is a structural schematic diagram of the exemplary
embodiment of the present utility model.

[0014] FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.

[0015] FIG. 3 is a structural schematic diagram of the upper bracket of
the exemplary embodiment of the present utility model.

[0016] FIG. 4 is a structural schematic diagram of another exemplary
embodiment of the present utility model.

SPECIFIC MODE FOR CARRYING OUT THE UTILITY MODEL

[0017] Hereinafter, the preferred embodiments of the present utility model
are described in detail in conjunction with the accompanying drawings.

[0018] As shown in FIGS. 1-3, the spiral fin heat exchanger with a new
fixed manner includes a bended fin tube 1 comprising an inner tube 15, on
which fins 14 are provided. The fin tube 1 is repeatedly bended, and
lengths of the two adjacent bends of the fin tube 1 are different. As
shown in FIG. 1, the length of bend 11 of the fin tube 1 is longer than
the length of bend 12 of the fin tube 1, such that a gap may be formed
between the bend 11 and the bend 13, the gap can perform functions of
increasing the wind channel and reducing the wind resistance, thereby
improving the ventilation efficiency and in turn improving the heat
exchange effect of the heat exchanger.

[0019] Several fixing members 2 are provided on the fin tube 1. The fixing
member 2 includes an upper bracket 21 and a lower bracket 22, and the
upper bracket 21 is fixedly connected with the lower bracket 22 through a
side bracket 23. The upper bracket 21 includes a cover plate 211 and a
vertical plate 212, and fins 14 on the fin tube 1 are caught between the
cover plate 211 and the lower bracket 22. A positioning groove 213 is
provided on the vertical plate 212, and the inner tube 15 of the fin tube
1 is caught in the positioning groove 213. The spiral fin heat exchanger
can fix the fins and the inner tube of the fin tube simultaneously
through the upper and lower brackets of the fixing member, thereby
achieving the effect of dual fixation, such that the fin tube can be
fixed more firmly and is not easy to loosen, which can in turn reduce the
noise of the spiral fin heat exchanger effectively.

[0020] As shown in FIG. 4, another exemplary embodiment of the present
utility model is shown, and the fin tube 1 can be bended to a variety of
shapes according to the actual need.

[0021] Although a spiral fin heat exchanger with a new fixed manner
provided by the exemplary embodiments of the present utility model is
described in detail as above, it is apparent to those skilled in the art
that changes can be made to the detailed description and application
scope according to the spirit of the embodiments of the present utility
model. To sum up, the disclosure of this specification should not be
construed as limiting of the present utility model, and any change made
according to the design spirit of the preset utility model falls into the
protection scope of the present utility model.